Xrotary  drilling apparatus



Nov. 5, 1940. cfuoHANsEN ROTARY DRILLING APPARATUS origin-,11 Filed July 7, 193e Reima! Nev. 5, 1940 Harry C. Johansen, Michigan City, to Sullivan Machinery Company,

` .of Massachusetts Ind., assigner a corporation Original No. 2,192,192, dated March 5, 1940, Serial 'No. 241,450, November 19, 1938, which is 'a di- -vision of application Serial No. 89,300, July 7,

1936. Application for reissue August 29, 1940,

Serial No'. 354,755

10 Claims.

' This is an application for reissue of Letters Patent No. 2,192,192, granted March 5, 1940.

This invention relates to rotary drilling apparatus, and more particularly to an improved feed- 5 ing, guiding and driving means for the drill rod rotating member of a rotary drilling apparatus.

An object of *this invention is to provide an improved hydraulic drill rod feeding means for a rotary drilling apparatus. -Another object is to l provide an improved feeding and guiding structure for the drill rod rotating member. A further object is to provide improved driving means for the drill rod rotating member. Still another object is to provide an improved means for guiding lf the anu roaduring the feeding operation. A.

still further object is to provide an improved feeding and guiding structure for a drill rod wherein elements of the feeding means also serve as elements of the guidingmeans. Yet another 20 object is to provide an improved flexible, selfadjusting driving connection between the source of power and the drill, lrod rotating member whereby the latter may be driven irrespective of its feeding position along its guideways. Still u another object is to provide an improved feeding apparatus including a crosshead guided on the feed cylinders and carrying thereon between the feed cylinders a chuck for movement therewith relative to the cylinders, the construction being 30 such as to facilitate positioning relative to the chuck of an upright element to be gripped thereby and fed. A further object is to, provide an improved drill rod feeding and guiding structure which is extremely rugged and compact.

35 These and other olijects and advantages of the invention will,4 however, hereinafter more fully appear.

The subject matter of this application has been divided out of my copending application Serial 40 No. 89,300, filed July 7, 1936,.

In the accompanying drawing there is shown for purposes of illustration one form which the invention may assume in practice.

In this drawing:

Fig. 1 is an end elevational view, with parts shown in vertical'section, showing an illustrative form of the improved `drill rod feeding. guiding and rotating means.

Fig. 2, is a vertical sectional view taken substan- 50, tially on line 2-2 of Fig. 1.-

.Tn this illustrative embodiment of the invention, the improved drill rod feeding, guiding and rotating means generally designated I is adapted for embodiment in a rotary drilling apparatus of Il the portable automobile type and to be driven (Cl. Z55-22) side frames 3, 3 on which the frame l'of the feed-A ing, guiding and rotating means I is mounted, the frame I having lateral brackets 5 resting on andfixed in any suitable manner to these side frame members. The drilling apparatus mounted on the platform of the automobile chassis embodies conventional hoisting mechanism, amud pumpfor supplying drilling fluid to the drill hole and a fluid pump for supplying liquid under pressure to the feeding means, and these several members of the drilling apparatus are adapted to be driven by the engine of the automobile.

Now referring t6 the improved drill rod feeding, guiding and rotating nieans l, it will be noted that the frame 4 thereof has mounted thereon in a position projecting upwardly above the automobile chassis platform, parallel vertical feed cylinders E, 6, the latter having top heads 1, 1

'supported within. the upper frame brackets 8 and bottom heads 9, 9 supported with the lower frame brackets I0. The frame brackets 8 and I0 have bores for receiving the ends of the feed cylinders and the cylinder heads so that the feed cylinders are rigidly supported in position on the frame. Reciprocably mounted in )he feed cylinders are feedv pistons Ii secured to piston rods I2, the rlatter herein extending upwardly through the packed top heads 1 ofthe feed cylinders. Secured at i3 to the upper ends of the piston rods and arranged above the feed cylinders are transverse frames Il in turn having secured thereto parallel connecting rods l5 herein extending downwardly along the opposite sides of and` arranged parallel with the feed cylinders in the manner shown. These depending connecting. rods i5 are secured at their lower ends to a transverse frame or sliding crosshead I6 extending horizontally across the space between the parallel feed cylinders 6 and formed at its opposite ends with cylindrical guides .i1 slidably guided at I8 for up and down sliding-movement on the cylindric exterior surfaces of the parallel feed cylinders. J ournaled in this transverse frame or sliding crossliead I6 and located centrally between the feed cylinders is a sleeve I9, and the frame I6 has a,

vertical drive chamber 20 in which are supporte/dfvertically spaced anti-friction bearings 2l, 2i fn which the sieeve is journaled. The drive sleeve carries a top chuck 22 of the conventional screw operated, jaw type for connecting,e.\conventional drill rod, `extending centrally through thel sleeve, to the sleeve for `rotation therewith. It will be noted that the space above the chuck and crosshead is clear of obstructions which would interfere with the lateral movement, just above the crosshead and chuck, of the lower end of an upright element to be received in the chuck into alinement wit the latter.

'I'he improved means for rotating the drive,

an element of the automobile transmission. The

r'ear wall of the drill frame 4 is slotted vertically y at 30, so that when the crosshead I6 is slid rectilinearly valong the parallel feed, cylinders the slot permits free movement of the shaft 25, universal joint 26 and shaft 21 with the crosshead,-

so that, `irrespective of the position of the latter, the drive sleeveV I9 may always be driven. Fluid under pressure is adapted to be supplied to the opposite ends of the feedl cylinders 6 through suitable conduits connected to the fluid pump of the drillingapparatus under the control of/suitable` valve means, so that the feed pistons Il, ll may be fed either upwardly or downwardly within the feed cylinders. When the feed pistons assume their lowermost positions Within their feed cylinders, the crosshead I6 is located at the bottoms of the feed cylinders, asgshown in the drawing. Of course, when thedrill rod is fed in either of opposite directions by the feed pistons, the drill rod may simultaneously be rotated through the flexible, yself-adjusting drive connections.

As a result of this invention, it will be noted that an improved feeding and guiding structure is provided whereby the drill rod of av rotary drilling apparatus may be fed and guided in an improved manner. It will further be evident that by utilizing elements of the feeding means as elements of the guiding means, the structure is rendered comparatively simple, rugged and compact in design. It will further be evident that by the provision of the improved sliding crosshead structure and the telescopic, self-adjusting driving connections, the drill rod may be fed either upwardly or downwardly along the parallel feed cylinders while at the sameV time it may be rotated in an improved manner. Also by the provision of the improved drill arrangement by which the chuck is carried by the sliding crosshead structure between the feed cylinders, and the crosshead is connected, as shown and described, to the feed pistons, there is provided a clear space above the chuck so that an upright element to be gripped by the chuck can be moved laterally, with its bottom just above the top of the chuck and crosshead, into axial alincment with the chuck. Other uses and advantages of the invention will be clearly apparent to those skilled in the art.

While there is in this application specifically described one form which the invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and` embodied in various other forms without de- 21,e1e l parting from its spiritV or the scope of the appended claims.`

What I claim has new and desire to secure by Letters Patent is:

1. In a drilling apparatus, the combinationl comprising a frame, parallel feed cylinders supported by said frame, a crosshead slidably guided on said cylinders, pistons contained in said cylinders and having'upwa'rdly extending piston rods, connections between the upper ends of said piston rods and said crosshead, drill rod rotating means journaled on said crosshead, and driving means mounted on said frame and relative to which said crosshead is movable, for driving said rotating means irrespective of the position of said cross= head relative to said cylinders.

2. In a drilling apparatus, the combination comprising a frame, hydraulic feeding means on said frame including feeding elements providing a vertical guideway, a crosshead slidably guided on said guideway, means for supplying hydraulic pressure to said feeding means to effect movement of said crosshead vertically along said guideway, drill rod rotating means journaled on said crosshead, and driving means for said rotating means including a.V driving element journaled 'on said frame, a driving element journaled on the crossnead, and a universal telescopic torque shaft connection between said driving elements whereby said rotating means may be driven irrespective of the position of said crosshead along its guideway.

3. In a drilling apparatus, the combination comprising parallel feed cylinders, pistons reciprocable in said cylinders, a crosshead guided on said cylinders, means for connecting said pisi tons to said crosshead whereby movement of said pistons in said cylinders effects movement of said crosshead along said cylinders, drill rod rotating means mounted on said crosshead, and self-adrelative to said feed cylinders and including driving elements relative to which said crosshead is bodily movable.

4. In a drilling apparatus, the combination comprising parallel lfeed cylinders, pistons reciprocable in said cylinders and having projecting piston rods, a crosshead guided on said cylinders, connecting rods extending along the sides of said cylinders for connecting said piston rods to said crosshead whereby movement of the pistons in said cylinders effects movement of said crosshead along said cylinders, drilll rod rotating means mounted on said crosshead, and means for driving said rotating means irrespective of the position of said crosshead relative to said cylinders and including drivingelements relative to which said crosshead is bodily movable.

5. In a drilling apparatus, the combination of a support, a pair of vertical feed cylinders vextending upwardlyfrom said support, feed pistons reciprocable in said cylinders, a crosshead slidably guided on said cylinders and operatively connected to said feed pistons whereby movement of said feed pistons in said cylinders effects move- 4 ment of said crosshead along said cylinders, drill rod rotating means mounted on said crosshead,r and self-adjusting driving connections for said rotating means for driving the latter irrespective of the position of said crosshead relative to said feed cylinders and including a driving element mounted on said support and relative to which said crosshead is bodily movable.

6. In a drilling'apparatus, the combinationof justing means for ydriving said rotating means irrespective of the position of said crossheadv a pair of parallel feed cylinders supported at an angle to the horizontal in a stationary position,

feed pistonsreciprocable in said cylinders and t having upwardly extending piston rods projecting through the top cylinder heads, a crosshead slida- I bly guided on said cylinders ltherebetween and disposed near the lower ends of said cylinders when said pistons are at the lower cylinder ends, connecting rods extending parallel with and along the sides of said cylinders for connecting the upper ends of said piston rods to said crosshead whereby movement of said pistons in said cylinders effects movement of said crosshead along` said cylinders, and drill rod rotating means' mounted on said crosshead.

7. In a drilling apparatus, the combination comprising hydraulic feed cylinder and piston feeding means including a feed cylinder containing a reciprocable feed piston, drill rod rotating means including a rotary member having an opening adapted to receive a drill rod, means for s'lidably guiding said drill rod rotating means including a sliding crosshead on which s'aid rotary member of said rotating means is mounted, said crosshead having a portion slidingly engaging the exterior surface of said feed cylinder, an operative connection between said feed piston and said crosshead, and means for rotating said rotating means irrespective of the positionof said crosshead relative to said cylinder including a drive t member operatively connected to said rotary member and relative to whichsaid crosshead is slidable.

8. In a drilling apparatus, the combination comprising a support, a pair of parallel, vertically arranged feed cylinders mounted on said support, feed pistons' reciprocable `in said cylinders, a

crosshead slidably` guided onl said cylinders there- 9. In a. drilling apparatus, the combinationcomprising a frame, a pair of parallel, vertically arranged, hydraulic feed cylinders mounted on said frame, feed pistons reciprocable in said cylinders, a support arranged between and guided on said cylinders and movable relative thereto in a direction longitudinally thereof, operative connections between said feed pistons and said support, drill rod rotation means mounted on said support, and means for driving said rotation means irrespective of the position of said support relative to said cylinders including a drive member journaled in said support, a drive member journaled on said frame, and a self-adjusting driving connection between-said drive members.

l0. In a drilling apparatus, a support, laterally spaced, upright cylinders mounted on said support and having cylindrical peripheral surfaces providing guides, a crosshead having portions slidablyengaging the cylindrical peripheral surfaces of said cylinders to guide said crosshead, said crosshead having thereon between said cylinders a rotatably mounted chuck arranged for rotation on an axis parallel to and between the axes of said cylinders, pistons in said cylinders, piston rods extending tlnough the upper ends of said cylinders, operative connections between the upper ends of said piston rods and said crosshead including rods extending downwardly alongside said cylinders when said pistons are in lowered' positions and connected at their lower ends to said crosshead, said crosshead being disposed near the lower ends of said cylinders when said pistons are adjacent the lower ends of said cylinders and said cylinders being so spaced and said operative connections being so formed that said crosshead maymove upwardly anddownwardly along the cylinders from points adjacent the upper ends thereof to points adjacent the lower ends thereof, and the space above said crosshead and chuck being clear at least in line with the chuck to permit the lower end of an upright element toy be gripped iny the chuck to be moved laterally at an elevation just above the chuck and crosshead into and outof alinement with the chuck.

HARRY'C. JOHANSEN. 

